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L. P. JENKS, OF BOSTON7 i\IASS.-XCHSETTS, ASSIGNOR T() )VBL S. MURRAY, OF NFAV YORK, N. Y.

FILTER.

Specification of Letters Patent No. 31,352, dated February 5, 1861.

To all whom it may concern:

Be it known that I, LEMUEL P. JENKS, of the city of Boston, Suffolk county, State of Massachusetts, have invented a new and Improved i-rrrangement for the Purpose of Filtering liVater; and I do hereby declare that the following is a full and exact description thereof, reference being had tothe accompanying drawings,` and to the letters of reference marked thereon.

The nature of my invention consists in so constructing two metallic cases, in combination with a bunch or bunches of bristles, horse hair or other fibrous substances. as that by alternate compression or expansion, the water (or other liquid) passing through the cases and the bunches of fiber, may at pleasure be discharged either with or without accompanying impurities.

In the drawings annexed, Figure l is a side View, F 2 is a perpendicular section, and Fig. 3 isa horizontal section at the line A A of Fig. Q.

B B, B, B Fig. 2 is the outer cone with an inside screw at B, B', and another at top at B B,-and a flange at B2, B2.

C, C, C, Fig. 2 is the inner cone with a flange at P, P. A sect-ion of this is seen at Fig. 3, where are also seen at D D D D 4 deep grooves and at E E E E 4L shallow grooves, these` last communicating by the horizontal grooves F F F F and F F F F, (seen in Fig. 9.) with the grooves D D D D, and around the lower part of this cone C C C is an outside screw fitting into the-screw B, B. The grooves D D D D hold each a bunch of bristles (L L in Fig. 2) preferably, or horse hair or sponge, lying longitudinally along the inner cone,-secured at the bottom in the holes G G (Fig. 2) by piteli,sliellac or other means, and at the top by the brass wire binding seen in Fig. 2 at the points II H. (Thepiece I I is simply a fiat projecting piece to hold the wire in place and the screw J holds I I' in place.)

At K K K on one side and K K K on the other (Fig. 2) of the inner cone are seen holes communicating with the interior space M.

N N is a hollow cone reversed (with `curving sides) fixed firmly to the lower part of 7O O is an elastic ring (say of india rubber) surrounding the lower part of the inner cone C, C, C, and resting therefore between the upper' flange B2, B2, and the lower flange P', P, and at P', P, in the fianges are seen 9. grooves, one in each flange into which grooves the rubber ring is compressed when the 2 cones are screwed together.

The operation of this contrivance is this. The filter is Secured firmly on to the hydrant and the water being turned on passes between the two cones and being hindered from passing out at the lower part of the cones by the rubber ring O, Of-passcs through the bristles L L, Fig. 2 (there are el bunches of these in the grooves seen in horizontal section at F 3 at D D D D) and through the holes K K K &c., into the chamber M and out through the aperture Q Fig. 2. This water is not filtered.

To filter the water, the under cone is screwed up, into the upper cone, thus compressing the bunches of bristles and diminishing the size of the longitudinal apertures between their fibers, and leaving only space for the water to pass through, while the impurities are left behind. .This water is liltered.

To clean the filter, the under cone is simply screwed down, when the water forces the impurities through the bunches of bristles, and out as before, and the cones being left in that position the water passes through unfiltered. And I sometimes put over each bunch of bristles a piece of thin metal (perforated perhaps) or pieces of other substance and sometimes a single cap of the same, to obviate any effect of friction upon the bristles. And instead of four bunches of bristles,Isometimes use but one, or more.

It will be perceived that the filtration is effected by screwing the under cone up to the upper cone, thus compressing the bunches of bristles by a sidewise pressure, which pressure is hindered from so flattening said bunches as to destroy their ltrating effect by placing said bunches in their respective grooves D D &c.,-the sides of the grooves holding the bunches in position, and the compression actually taking effect between the said sides and the upper cone. The support given to the bunches by these sides of the respective grooves also prevents the drawing away of the bristles from their attachments either above or below, thus leaving the alternate filtration and non filtration to be effected Without any destruction of, or prejudice to the arrangement by either traction or torsion.

the combination and arrangement of one or more bunches of fibers placed in a perforated groove or grooves and alternatelyT compressed or expanded, for the purpose of' liltrating Water or other liquids, all as set forth.

LEMUEL P. JENKS.

Witnesses LEMUEL WV. SERRELL, JOHN F. GRAY. 

